Machine for grading patterns



E. E. SANBORN.

MACHINE FOR GRADING PATTERNS. APPUCATION FILED mus. 1921.

1,4]. 3,065. Pa'tegted Apr.. 18, 1922.

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. lm lehror.

Elmer E. sanborn E. E. SANBORN MACHINE FOR GRADlNG PATTERNS.

APPLICATION FILED JAN. 6, 192i.

Patented Apr. 18, 1922.

f 5 SHEETS-SHEET 2- Inventor. Elmer E. Sonborn W Wy/QM ATTVs.

E. E. SANBORN. MACHINE FOR GRADING PATTERNS. APPLICATION man JAN. 6. 192l 1 ,41 3 ,065, Patented Apr. 18, 1922.

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Fig. v15.

4 :1 "X 2 so 85 4 g A 5 g 59 as Fig. 4.

E -A9 T-O" Invnior. 8 Elmer L. Scmborn J by E. E, SANBORN MACHINE FOR GRADING PATTERNS. APPLICATION FILED 1AN.6. 1921.

1,413,065, Patented Apr. 18, 192 2.

5 SHEETS-SHEET 4.

Fig.6 0 37 3' Fig. 7

Inventor. Elmer E. Sanborn Attys.

E. E. SANBORN.

MACHINE FOR GRADING PATTERNS.

APPLICATION FILED JAN. 6.192!- Patented Apr. 18, 1922.

5 SHEETSSHEET 5- Fig. )3.

Inventor. Elmer E. Sonborn. YMMxW res- ELMER E. SAN'BORN, OF LYNN, MASSACHUSETTS.

MACHINE FOB) GRADING. PATTERNS.

Specification of Letters'Patent. Patented Apr. 18, 1922.

Application filed January 6.192;. Serial no, 435,332.

T 0 all 107mm it may; 00mm: 7

Be it known that I, ELMER E. SANBonN, a citizen of the United States, and resident of Lynn, county of Essex, State of Massachusetts, have invented an Improvement in Machines .for Grading Patterns, of which the following. description, in connection with the accompanying drawing, is a specification, like characters on the drawingrepresent'ing like parts.

This. invention relates to machines for forming patterns from a master pattern and while it is capable of a wide variety of uses, yet it has special advantages when usedin forming shoe patterns. In cutting or forming shoe patterns it is customary to employ a master pattern and then from this master pattern. to cut or form a plurality of similar patterns of dilferent sizes for different sizes of shoes. This operation is commonly referred to in the trade as gradingpatterns. The machines which are used for this purpose of grading patterns comprise a cutting or scribing element,'a work holder for holding the sheet of material from which the pat tern is to be cut, means to support a master pattern, a jtracer or follower-adapted to be moved around theedge of the master pattern and means operable by the movement of the tracer to cause the cutter or scribing tool to cut from, or mark on, the sheet of material a pattern similar to the master pattern.

One of the objects of my present invention is to provide a novel grading machine in which the master'pattern and-the cutteror scribing tool are held stationary relative to each other during the operation of the machine while the material from which the pattern is to be cut is given a movement rela tive to the tool, but is so controlled by the stationary master pattern as to cause the tool to cut from, or form on, the sheetmaterial the desired pattern.

-Another object of my invention is to provide a grading machine in which the cutter or scribing tool and its operative parts are carried by a support that is entirely separate from the means that support the master pattern and the work, so that the said tool may he moved into any convenient position relative to the other parts of the machine without affecting in any way the operation thereof.

Another object of the inventlon is to provide a novel grading machine by which it is possible in the making of any pattern to produce a greater variation from tl e master pattern in one direction than in a direction perpendicular thereto. invention is useful'whereit is desired to grade a pattern of a shoe vamp for instance, by producing a patternv whichdiifers more from the master patternin the direction of thelength than inthe direction of the width. Other objects of my invention are to, provide an improved means for supporting the master pattern, to provide an improved This feature of the I I mechanism for producing the desiredmovement inthe work support and otherwise to improve machines of this type, all as will more fully be hereinafter set'forth.

In order to give an understanding of my invention I'have illustrated in the drawings a selected embodiment thereof which will now be described, after which the novel fea tures will: be pointed claims.

In the drawings: Fig. 1 is a frontview ofa grading machine embodying my invention,

Fig. 2 isa top plan view thereof, Fig. 3 is a side view of the scribing tool,

out in the appended Fig. 4; is an enlarged section on the line Fig. 10. is a fragmentary plan view showing the means for clamping the'master pattern to its holder.

Fig. 11 isv a side view partially in section,'showing the punch which is used for tern,

Fig. 12 is a plan-view of'Fig. 11, Fig.'13 is "a vertical section through the punch,

forming the apertures in themaster pat- Fig. 14 1s an enlarged fragmentary secltionalview showing the manner in which the carriages are supported,

Fig. 15 1s a section on rig-14,

Pg. 16 1s a plan view of the lever connection 42,

Fig. 1" is a section on the line 17-17, Fig. 2,

the line 15 15,

Fig. 1 8 is an enlarged view of the indicator for indicating different sizes.

The machine is intended primarily for cutting patterns from, or marking patterns,

on material having a fiat face, and while the character of the material IS- not im'-' portant so far as the invention'is concerned,-

provided it has a fiat face, yet for the sake of illustrating the invention, I have shown material in the form of sheet material. I will therefore for convenience hereinafter refer to the material as sheetmaterial, but with the understanding that this expression is not used in a limiting sense but merely as illustration of one kind of material on which the machine can operate.

The material from which the pattern is tobe cut is supported in a work-supporting mechanism or jack indicated generally at 1. This work-supporting mechanism will be constructed to hold properly theparticular'materialbeing used, and where such material] is sheet material as herein shown,

, I will preferably make said work-supporting mechanism with suitable jaws between which the sheet material may be clamped.

The pattern is cut from, or marked on, the sheet-materialby means of an element whichl will hereinafter refer to as an out lining tool or outlining mechanism because 'it forms on the sheet material the outline of the desired pattern. So far as the invention is concerned this outlining tool might operate either to out the pattern from the sheet material or mark it thereon.

' prefer, however, to employ an outlining tool of the type which will cut the pattern from the sheet material. The outlining vtool may assume various forms without departing from the broad principle-of my invention. I have herein illustrated, however, a form of outlining tool which involves a rapidly reciprocating punch 7 {adapted to punch-in the sheet material a multitude of apertures which overlap each other tosuch an extent as to form a slot. The. outlining tool or mechanism is indicated gen jerall'yatQandit is supported-upon a'frame which is entirely independent from that which supports the worlcliolding means 1 The particular construction of the outlining mechanism will be presently given in detail. a 1.

The masterp'attern is supported on a'stationary pattern support indicated generally at 3. In the vdrawings I have illustrated a master pattern 1 for a shoe vamp, but, of course, the particular shape and-contour of the. pattern 4: is; immaterial. As stated above, the master pattern at is fixedly secured to its stationary support 3 and a tracer, indicated at .'5,'is employed which is designed totrace around the edge of the pattern 4, as usual in machines of this character. The present invention involves means which is controlled by the movement of the tracer around the pattern to give the work support 1 a movement relative to the outlining tool, thereby to cause the latter to form on or from the sheet material 6 a pattern which is similar to the master pattern 4, but which may be either of the same size as the master pattern or of a different size depending on the adjustment of said means In other words, in my improved machine the master pattern 4: and the outlining tool are stationary relative to each other and the forming of the pattern from the sheet material is accomplished by moving the sheet material relative to the outlining tool.

The" work supporting means 1 andthe pattern support '3 are carried by a suitable base frame, indicated generally at 8, and it may have any appropriate construction. 7

This frame is-shown as having a platform or portion 9 which constitutes the support for the master pattern. The particular means employed for attaching the master pattern to the support will be presentlydescribed.

The'work supporting element 1is supported on the main frame 8 through. four movably mounted carriages superposed one on the other, two of which are constructed to move longitudinally of the frame and the other two of which are constructed to move transversely of the frame. These carriages comprise a lower carriage 10 movably mountedon ways 11 formed on the base frame 8 and extending transverselythereof, so that the lower carriage 10ucan onlyto employ a special form of ball bearings betweenvthe various carriages. The base frame 8 and each of the carriages is pro- "vided with .V-tracks or grooves 15 in which are received a plurality'of balls 16 that are sustained in and properly spaced by a cage .17, the latter being .a thin strip of metal having apertures therein tofreceive vthe balls so that the balls project both above and below it. Each of the carriages isprovided on its under face with t -grooves to receive the balls. These ball bearings are preferably placed at the ends of each carriage-and the V grooves on the under side of each carriage are preferably cut away at the central portion of the'carriage as shown at 105 to'such an extent as to be'out of contact with the balls. The portions 106 at each end of .each V-groove which bears against the balls is preferably of a suflicient length to receive two balls only, and as a result each carriage is supported at each corner on not more than two balls. This construction prevents the possibility of the carriages having any rocking motion due to a high ball in the center and results in maintaining each carriage accurately in alignment. As any carriage is moved the cages 17 for the balls on which said carriage is supported will travel with the balls at one-half the speed of the carriage.

The tracer 5 iscarried on the carriage 12. The movement of the carriage 12 on the carriage 1O longitudinally of the frame permits the tracer to have a longitudinal movement and the transverse movement of the carriages 10 and 12 on the base 8 permits the tracer to have a transverse movement.

These two movements combined permit the tracer to move in any direction and enable it to follow-around the contour of any pattern 1.

This tracer is shown as carried on a stem 18 which is screw threaded in an arm 19 extending from the carriage 12, said arm having a hand piece 20 by which the carriage 12 may-be manipulated. The stem 18 of the tracer is mounted inthe arm 19 for vertical adjustment, this being provided for by making the stem with a screw threaded portion 21 which has screw threaded engagement with the arm 19 and providing said stem with a handle 22 by which it may beturned, thereby to raise and lower it'in the arm 19. The tracer is formed with an annular groove 23 in'which the edge of the pattern l is received, said groove acting as a'guide so as to better maintain engagement of the tracer withthe edge of the" pattern. When the tracer is not in use it can be raised into the position shown in Fig. 7. When it is to be used the handle 22 is turned so as to screw the stemlS downwardly to bring the groove'23' opposite the edge of the pattern t and then by manipulating the handle 20 the tracer may be carried around the edge of the pattern.

Suitable operative connections are provided between the upper carriage l i, on which the work supporting member 1. is sustained, and the carriage 12 by which the movements of the carriage 12 are trans- -mitted to the carriage 14 thereby causing the workto have a movement corresponding to that oi the tracer in following the edge of the pattern. These operative connections -are such that the movement which is given to the work holder may be either a duplicute of the movement of the tracer, or may be a similar movementbut of greater or less amplitude. When the connections are arranged so that the movement of the work holder is the same as that of the tracer in following the pattern 4, then the pattern which is cut from the sheet 6 will be a duplicate in size of the master pattern, but if these operative connections are adjusted so as to give the work support a movement similar to that of the tracer but of greater or less amplitude, then the pattern which is cut will be similar to the master pattern but of a larger or smaller size.

W hen these operative connections areadiusted so as to cause the pattern which is cut from the sheet 6 to be a duplicate in size of the master pattern, the upper carriages 13 and 1.4 will have no movement relative to each other, and the entire movement which is given to the work support willbe that produced through the lower carriages 10 and 12. l have therefore chosen to refer to these lower carriages ll) and 12 as duplicating carriages because they are the ones which are operative to duplicatethe master pattern.

On the other hand connections are adjusted so as to produce a pattern which is similar to the master pattern but different therefrom in size, then the where these operative upper carriages 13 and 14 will have a movcment relative to the lower carriages, and as these upper carriages come into play when patterns are being graded, T have chosen to refer to these upper carriages 13 and 14L as grading carriages.

The operative connections above described by which the carriages are given their movement comprise one connection between the longitudinally movable duplicating carriage 12 and the longitudinally movable grading carriage 13 which controls the longitudinal movement of the work support relative to that of the carriage 12 and another connection between the longitudinally movable grading carriage 13 and the transversely movable grading carriage 14 which controls the transverse movement of the work support relative the carriage 12.

The first oi these connections is in the form of a lever 24L which is pivoted to the carriage 12 at 25 and which is also pivot-ally connected at 26 to a fulcrum block 27 that is slidably mounted on ways 28 that extend transversely of the main frame. This tulcrum 26, therefore, can move in atransverse direction, but has no movement longitudinally ot the "tran e. The lever 24c is cone is slidably mounted on the lever 24..

portion of the lever 24, on which this block is mounted, is curved. with a radius of curveture equal to the length of the link 29. The block 32 can be shifted on the lever 24 to either side of the pivotal point 25.

Since the pivot 26 has no movement longitudinally of the frame and since said lever is pivoted at to the longitudinally movable carriage 12' it will follow that any movement of the carria e 12 longitudinally of the frame will cause a swinging movement ofthe lever24 and because of the fact that the pivot 26 is carried by the slidable block 27 this movement will be in no wise affected by any transverse movementof the carriage 12. If thebloclr 32is placed directly over the pivot 25'then the carriage 13will move in unison with the carriage 12 because the eifect will be the same as if the link 29 were pivotally connected directly to the carriage 12. l'f,,however, the block 32 is adjusted out of line with the pivot 25 into the position shown in Fig. 2 then the swinging movement 7 of: the lever 24, due to movement of the car- 'riage 12 longitudinally of the frame, will operate to give the carriage 13 an increment of motion over that of the carriage 12, such increment bein reator or less .de sendin b tn l":

uponfthe distance which the block 32 is from the center 25. On the other hand, if the block 32 is shifted to the opposite side of the center 25. from that illustrated. in Fig. 2. then the carriage 13 will have a decrement of movement under that of the carriage 12, the

amount of such decrement depending on the position of the block 32. Hence, by properly adjusting the block 32 the carriage 13 will be given a movement longitudinally of the frame either greater or less than that given to th carriage 12 by a predetermined amount dependent on theposition-of the block 32. I V

Suitable means are provided forloclzing the block 32 in any adjusted position on the lever 24, but a convenient mechanism for this purpose is illustrated in Figs. 6 and 9. 'The arm 24 is provided with a groove 33 in its upper face in which is receiveda notched bar 34. The block 32 has a latch 35 pivoted thereto at 36, which latch extends across the top of the leverv 24 andis adapted to. engage in any one of the notches of the bar 34. This latch 35 extends througha slot 37 formed in the block 32 and is thus prevented from lateral movement. It is shown as acted uponby a spring 38 which normally holds it in operative position. The block 32 carries a stud39 on which is rotatably mounted a cam 40 having a hand wheel 41 connected thereto by which it may be turned. The cam is situated so that the end of the latch projects bver it and when said cam is situated so that the low part thereof comes v opposite. the latch, then the latch is permitlever 42 which is pivoted at 43 to a support 44' rigid with, but depending from, the carriage 13. One end of this lever 42 is pivotedat 45. to a block 46 which is slidably mounted on ways 47 extending longitudinally of the frame. .The pivot 45, therefore, can move longitudinally with the carriage 13, but is prevented from movement transversely of theframei Any movement of the carriage 13 transversely of the frame wlll, therefore,

give swinging movement to the leven42 about its pivot 45. Theupper carriage 14 is connected to this lever 42 by means of a link 48, said link being pivoted to the carriage 14 at 49 and also being pivotally connected to a block 50 which is slidably mounted on the lever 42. The connection between the block 50 and the lever,42 is similar to.

that shown in Figs. 6 and 9 except that the notched bar 34 is placed on the under side of the lever 42 instead of on'topthereof. With this arrangement it will be evident that when the'block 50 is adjusted so as to be directly over thepivot 43, then. any swinging movement of the lever 42, due to transverse movement of the carriage '13, will not affect the carriage 14, and the two carriages 13 and 14 will have no movement relatively to each other. On the other hand, if the block 50 is moved into the'position shown in Fig; 2, then any swinging movement of. the

lever 42, due to transverse movement ofthe j carriage 13, will give the carriage 14 an ncreased motlon over that of the carriage. 13, the amount of increase depending on the position of the block 50 relative to the pivot .43. On the other hand,when the block 50 is shifted to the right of. the pivot 43 shown in Fig. 2, then the swinging of the lever42,

due to transverse movement of the carriage 13, will cause the carriage 14 to have a less transverse movement than said carriage13. Thus the combined action of the levers 42 and 24 will result in giving to the carriage 14, and the work support sustained thereby,

a movement similar to, but of'a greater or less amplitude than that of the carriage 12 depending on the adjustment of the blocks 32 and 50. i 1

W hen the device is used for grading shoe patterns the master pattern is secured to the pattern support 3 and the blocks, 32 and 50 V will then be adjusted to correspond to the size of the pattern which it is desired to form from the sheet material 6. If, for instance, the master pattern correspondsto size 8 and it is desired to form a pattern for an shoe, or a 9 shoe, or a then the blocks 32 and 50 will be adjusted the prope'r distance away from the centers25 and 43 to produce the pattern of the desired size. The

notches in the bar 34 will preferably be so spaced as to correspond to half sizes and, therefore, an adjustment of either block 32 or 50 one notch away from the center in one direction will produce a pattern a half size larger; two notches away will produce apattern a full size larger, etc. After the adjustment has been made then the tracer is placed against the edge of the master pattern 4 and the scribing tool is set in operation and the tracer is carried around the edge of the master pattern, such movement giving a similar movement to the carriage 12. This movement of the carriage 12 is transmitted through the connections above described'to the carriage 14 in such a way that the carriage 14 will have a movement similar to the carriage 12, but greater in amplitude in all directions, with the result that the pattern, which is cut or formed from the sheet material, will be similar to the pattern 4, but larger than it by an amount determined by the adjustment of the blocks 82 and 50. By similar adjustment of the blocks in the opposite direction a pattern smaller than themaster pattern but similar thereto may be formed.

In order to assist the operator in effecting a proper adjustment of the blocks 32 and 50 I propose to equip each lever with a gaugedev'ice. This is in the form of a graduated disk 51 pivotally mounted at 52 on the lever,

(24 01 42), and having a cord or flexible connection 53 wound on the edge thereof and connected to the link (29 or 48). Each disk 51 is acted on by a spring 151 which normally keeps the connection 53 taut. Each disk is provided with graduations 55 corresponding to the sizes and half sizes of shoes and each lever carries an indication mark 54 which co-operates with the gradua- 'tions 55 to indicate the adjustment of the block 32 or 50. As either block is shifted longitudinally of its lever the disk 51 will turn on its pivot and the particular gradua;

tion mark which is opposite the indicating mark 54 will indicate the size of shoe for which the machine is set. If. therefore, it is desired to form a pattern for a shoe, then the blocks and 50 are simplyfadjusted until the graduation comes opposite the indication mark 54.

Ijhave above described the operations of duplicating the master pattern and of gradin patterns from the master pattern that is, the operation of producing a pattern similar to the master pattern but of a different size in all directions.

It sometimes happens that it is desirable to produ e a pattern which is similar to the master pattern in one direction but is longer or shorter than said master pattern in the opposite direction. For instance, inthe case of the vamp pattern shown in the drawings, it is sometimes necessary to produce 'a pattern which is the same width as the master patternfbiit is longer. Then again in produci'i'ig patterns for shoe uppers, it is some times desirable to provide a pattern having the same height as the master pattern but one which is larger around. In order to provide for these operations, I have embodied in my machine means by which these variations in the pattern from the master pattern can be obtained. For this purpose each of the levers 24 and 42 is made in two sections, which are pivoted together and can be adjusted angul'arly relative to each other. In case of the lever 24 for instance, it is formed with an arm or extension 107 and is also provided with the forked section 108, which is pivoted to the lever at the point This lever section 108 is provided with a sector 109 and also with the extension 110 which carries thepiv ot 26. The two sections of the lever can be turned relatively to each other about the pivot '52, and when this operation is carried out the re'sult'will be that the curved portion of the lever 24 will be turned into a different angular position aboutits pivot 25. For normal operation of the machine the extension 107 will be adjusted into what I will term for convenience a neutral position. it is desired to produce a pattern which is longer or shorter than the master pattern but of the same width, then the lever "extension 107 will be adjusted to one side or the other of the neutral position thereby producing in the longitudinal, movable, grading carriage either an added or a decreased longitudinal moVe- I ti'o n of the upper duplicating carriage 14 which will produce a pattern that is either wider or narrower than the master pattern, depending on the adjustment. These compensating meansftherefore, enables me to produce patterns which vary from the master pattern a greater amount in one direction than in the other.

Any suitable means may be employed for 'lockii gthe' armexte'nsions 107 to the sectors 109. Iha've hereinshown a device similar to that which is employed for locking the blocks 32 to the levers 42 .or 24. Each sector is provided inits upper face with a plurality of notches 112 and each extension 107 is formed with a latch 212 adapted to enter in one of the notches. This latch may be elevated by means of a c'ani213 which issimila r in construction to the cam 40, so that by givingthe 02111 213 a partial rotation the 1at h will be raised, thereby unlocking the extension 109 from "the Sector, and when the such material is in the form of sheet material the work-holding means may conveniently be in the form of jaws between which the sheet maybe clamped. The work support herein shown comprises two jaws 56, 57 between which the sheet 6 may be placed and also means for clamping the sheet firmly between the jaws. The lower jaw 57 is shown as having a barbed bed plate 58 and the upper. jaw is provided with a clamping member 59 which can be clamped against the sheet 6 to'force it firmly against the barbed bedplate 58. This clamping member 59 is shown as provided with a stem 60 slidably mounted in the jaw 56 and acted on by a spring 61 which normally tends to hold it elevated. The jaw 56 has a cam shaft 62 journalled therein which carries a cam 63 bearing on the stem 60. This shaft 62 is provided with a handle 64 by which it may leased.

be turned and by rotating the shaft in either direction from the'positlon shown in Fig. 8 the clamping member 59 will be depressed, thus clamping the sheet material firmly against the barbed bed plate 58. The clamping member 59 ,is provided with guiding pins 65 operating in apertures formed in the jaw 56 and serving to guide the clamping member in its movement.

66 is a stripper element carried by the jaw 57 for stripping the sheet material 6 from the barbed. bed plate when the clamp is re- This stripper is in the form of a plunger acted on by a spring 67 which tends normally to elevate it, the spring-impelled 1 movement of the stripper being limited by a pin 68 operating in a slot 69 formed in the stem. The work supporting element 1 is shown as having two arms 70 extending from the lower jaw and which constitute a support for the sheet material if'the latter is rela-' tively large. This work supporting element isshown as pivotally mounted on the carriage 14 so that the jaws can be turned into bar 71 on which the work holding aws-are supported. This cross bar 71 has a clamping bolt 72 extending vertically therethrough' whichscrewsinto the lower jaw 57 and which is provided with a handle 73 by which it may be turned. When the clamping screw 72 is loosened, then the jaws can be shifted into any desired angular position and they will be retained in such position by tightening the clamping screw 72.

As stated above the outlining tool herein illustrated is in the form of a vertically reciprocating punch 7. This punch co-oper ates with a die 7 1 carried by an arm or bar 75. The punch 7 is mounted for verticalreciprocation in a guiding sleeve 76 which is carried by a head 114 at the end of an arm '7 7, which is secured to the arm or member at one end as shown at 78. The punch 7 may be H given its vertical reciprocations in any suit- 75 able way. I have herein shown it as operated from a motor 79 which is mounted on the arm or bar 7 7 This motor is belted to a-shaft 86 by means of a drivingbelt 81, said shaft having a pulley 82 thereon to receive the motor. The shaft 80 is rotatably mounted in a suitable bearing 83 carried by the arm 77 and saidshaft has acrank pin 84 mounted eccentrically therein to which is pivotally connected one end of a link 85, the other end of said link being connected, to alever 86 which is pivoted at 87. This lever is pro: vided with a slot 88 that receives a pi-n .89 extending from the punch 7. The rotation I of the shaft 80 will thus oscillate thelever 9O 86 and the latter will give reciprocating movement'to the punch 7.

The punch. may be raised and lowered so as to carry it into inoperative position above v the sheet, or into operative position where' it will act on the sheet. I v

This is provided-for by supporting the pivot 87 for the lever 86 in a vertically adjustable, arm 90 that is pivoted to themem- 1 i .handlel15 atone end by which it may be turned. -The turning ofthe shaft and the 1110 consequent turning of the cam 93 will operate to raise and lo er the arm 99 about its pivot9l as will beobvious. By this means the punch be elevated above the sheet or maybe lowered into operative ."position.

For securing fine adjustments of the punch. I propose to make the portion 113 V of theheadllfl vertically adjustable.v :This portion 113 'issecuredto the head 114-by means olfscrews 11.6 which extend through 1.20

, slots in the-portion 113, and said portion is also confined between two adjusting screws 1'17 carried by the head 114. By operating these adjusting screws the portion113 can be adjusted so as to cause the punch tooperate properly.

' This outlining tool as above described is, mounted on a base frame 94- which is independent from the frame 8 and which may be moved into any desired position. The

arms 77 and are pivoted on the base frame 9 and can be turned into different angular positions thereon. They are clamped in a desired position by a clamping screw 95 which is -'actuated by an arm. 96.

The master pattern 4: is secured to the pattern supporting table 3 by novel means, which facilitates the placing of the pattern into position or its removal from the support, and which also is constructed to hold the pattern centrally on the table. a

The supporting table 3 is provided with a plurality of concentric slots '97, which are equidistant from each other. Each pattern is adjustably held to the table by two or more clamping bolts 98 which extend through the slo'ts 97. Each bolt isprovided with a head 99 engaging the under side of the table and is also provided With a clamping nut 100. A washer 101 is applied to the clamping bolt 98 and rests on the top of the table 3, said washer being large enough to span the slot 97. Two or more clamping bolts are used for securing each pattern in position, and each pattern is provided with an aperture 102 which is large enough to permit the clamping nut 100 to pass there- 'through. 103 is a U-shaped washer adapted to be placed between the clamping nut 100 and the pattern &. Washer 103 covers the aperture 102 in the pattern and provides support for the clamping nut 100 to engage when the latter is tightened.

In securing the pattern to the table, the washers 103 are first removed and the clamping nuts 100 loosened slightly. The pattern is then placed in position on the bolts with the nuts 100 passing through the apertures 102 in the pattern. The bolts are then raised sufiicien'tly to permit the washers 103 to he slipped between the nuts and the pattern. after which the nuts are tightened, thus rigidly clamping the pattern to the table 8.

This construction has the advantage that the pattern can be clamped to the table without entirely removing the nuts 100 from the bol'ts 98. These bolts. therefore. are always in position thus obviating any danger of their becoming lost. Moreover it is only necessary to give the nuts 100 two or three turns during the process of securing a pattern to the table-or removing it therefrom.

The bolts will preferably be used on opposite sides of the same slot. so that each pattern will be situated substantially centrally of the table The particular slot in which the bolts are used will, of course, depend upon the size of the pattern,

The work support has associated therewith a so-called finder, the purpose of which is to assist the operator in properly placing the sheet material 6 in said work support. This finder comprises a pair of jaws 1'04 situated above the plane of the sheet material '6 and between which the pattern may be placed and. which are carried by an arm 125 pivotally mounted to the upper jaw as shown at 126. The arm 125 may be conveniently made extensible or adjustable as to its length. This finder is used as follows: A duplicate oi? the pattern which is to be formed is placed in the jaws 104i. and the tracer is brought against the master pattern 1. The sh et material (5 is then adjusted in the workholding jaws so that the pattern supported by the finder will lie entirely within the outline of the sheet 6, and said sheet may then be clalnped into position. This finder indicates the position on the sheet 6 from which the pattern will be tormed by the operation of the machine and the finder thus enables the operator to cut various patterns from the single sheet without waste of material and without danger that the patterns will overlap.

It will be noted that the link d8 which connects the upper grading carriage to the lever a2 is situated beneath the carriages. The advantage of this construction is that all the operative connections between the work support and the tracer are located below the carriages and entirely out or the way of the sheet material and of: the operator. This enables the machine to operate on sheet of any size and permits the operator to readily adjust the sheet in the machine without interference from any of the operative parts.

In order that the master patterns 4 may be properly attached to the table 3, it is necessary, of course, that they be provided with properly located apertures 102. in order to -facilitate locating these apertures I propose to use a punch such as illustrated in Figs. 11 and 12. This punch comprises a bed 127 having a die 128 therein and a punch 125) operating in the head 130., The die is provided with an extension 131 having a plurality ot' apertures 132 therein. into any one of which may be inserted a positioning pin 133. The punch 129 is moved vertically by a screw 134 which is screw-threaded into the head and provided with a handle for operating it. The extension 131 has a center mark located midway between the punch and the first hole v The distance bet een this punch and the hole is tosame as the distance between the opposit sides of the smallest concentric slot 91'' in the table 3.

In {mining the apertures 102 in a master vamp pattern 4-. said pattern will be placed in the punch with the center of the pattern and the center line 136 as indicated in dotted lines Fig. 12, and the punch will then be operated to punch one of the holes 102. The pattern is then removed and the punched hole is placed over the positioning pin 133 and after bringing the pattern back to a central position the other hole is punched. This will be placed in-the hole 132 which corresponds to the size of the pattern, and since the distance between the holes and the punch correspond to the distances between the slots 97, a correct location of the holes is always provided.

One feature of my invention to which I desire to call attention is that the movement which is given to the work support is always similar to the movement of the tracer, but in an opposite direction thereto; hence when the tracer is moving in one direction around the edge of the pattern, the work holder will be travellng 1n a directly oppo site direction, this results in inscribing a pattern on the sheet material, any point of which is situated 180 from the corresponding point on the master pattern.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A pattern forming machine comprising pattern-outlining mechanism, work-supporting mechanism, means for supporting a master pattern, a follower, means for moving the same along the contour of said master pattern and means operable thereby to move the work-supporting means relatively to the pattern-outlining means to cause the latter to outline upon the work a design controlled by the configuration of said master pattern.

2. A pattern forming machine comprising outlining mechanism, work supporting mechanism, means for supporting a master pattern, a follower, means for moving the same along the contour of saidmaster pattern, means operablethereby to move the work supporting means relatively to the outlining means to cause the latter to outline upon the work a design controlled by the configuration of said master pattern and ad justing means for varying the amplitude of the movements of the work support to produce patterns varying in size from that of the master'pattern. s

3. A pattern forming machine comprising outlining mechanism, worksupporting mechanism, means for supporting a master pattern, a follower, means for moving the "same along the contour of said master pattern, means operable thereby to move the work supporting means relatively to the outlining means to cause the latter to outline upon the work a design controlled by the configuration of said master pattern and ad justable means operable to vary the configuration of the pattern produced from that of the master pattern.

4, A pattern formingmachine comprising outlining mechanism, work supporting mechanism, means for supportinga master pattern, a follower, means for moving the same along the contour of said master pattern,

prising outlining mechanism,a frame, a support for a masterpattern sustained thereby, a work support, a duplicating carriage movable longitudinally of the frame, a second duplicating carriage movable transversely of the frame, grading carriages movable longitudinally and transversely of the frame respectively, a follower and means for moving the same along the contour of said masr ter pattern, adjustable means operable by the movement of said follower for imparting to said longitudinally movable grading carriage a differential movement relative to the movement of thelongitudinally movable duplicating carriage wherebypatterns of different lengths from that of the master pattern may be produced.

6. A machine for grading patterns comprising outlining mechanism, a frame, a

support for a master pattern sustained thereby, a work support, a duplicating carriage movable longitudinally of the frame, a second duplicating carriage movable transversely of the frame, grading carriages movable longitudinallyand transversely of the frame respectively, 'a'follower: and means for moving the same along'the contour of said master pattern, adjustable means operable by'the movement, of-said follower for imparting to said transversely movable Y grading carriage a differential movement relatively to the movement of the transversely movableduplicating carriage whereby patterns of different widths from thatof the master pattern may be produced.

7. A machine for grading patterns comp-ising outlining mechanism, a" frame, a support for a master pattern, a work support, a duplicating carriage 'movable longitudinally of the frame, a second duplicating carriage movable transversely of, the frame, grading carriages movable longitudinally and transversely of the frame respectively, a

follower" and means for moving the same along the contour of said'master pattern, independently adjustable means operable by the movement of said follower for imparting differential movements to said longitudis carriages whereby patternsconformingin' configuration to the master pattern, but of nally and transversely movable grading cardifferent size than the master pattern, may be produced. I Y

8. A machine for grading patterns comprising outlining mechanism, a frame, a support for a master pattern, a duplicating carriage movable transversely of the frame, a second duplicating carriage mounted on the first-named carriage and movable longitudinally of the frame, a grading carriage mounted on said longitudinally movable duplicating carriage, and also movable longitudinally of the frame, a second grading carriage mounted on said longitudinally movable grading carriage and movable transversely of the frame, a work support secured to the transversely movable grading carriage, a follower connected to said longitudinally movable duplicating carriage and means for moving the same along the contour of said master pattern, a lever pivotally mounted upon said longitudinally movable duplicating carriage, means connecting said longitudinally movable grading carriage to said lever, including adjusting means for securing the same to said lever in any position upon either side of said pivot.

9. A machine for grading patterns com prising outlining mechanism, a frame, a support for a mastern pattern, a duplicating carriage movable transversely of the frame, a second duplicating carriage mounted on the first named duplicating carriage and movable longitudinally of the frame, a grading carriage mounted on said longitudinally movable duplicating carriage and movable longitudinally of the frame, a second grading carriage mounted on said longitudinally movable grading carriage and movable transversely of the frame, said latter duplicating carriage having a work support secured thereto, a follower connected to said longitudinally movable duplicating carriage and means for moving the same along the contour of said master pattern, a lever pivotally mounted upon said longitudinally movable duplicating carriage, means connecting said longitudinally movable grading carriage to said lever, including adjusting means for securing the same to said lever in any position upon either side of said pivot, and means for adjusting said lever about said pivot.

10. A grading machine for patterns comprising outlining mechanism, a frame, a support for a master pattern a duplicating carriage movable transversely of the frame, a second duplicating carriage mounted on the first-named duplicating carriage and movable transversely of the frame, a grading carriage mounted on said longitudinally movable duplicating carriage and movable longitudinally of the frame, a second grading carriage mounted on said longitudinally movable grading carriage and movable transversely of the frame, said latter duplipivot thereon, a lever pivotally mounted on said pivot and a link pivotally connected at one end to transversely movable grading carriage and at its opposite end adjustably mounted upon said lever and capable of being secured in adjusted position upon either side of said pivot and means connecting one end of said lever to said base.

11. In a machine for grading patterns, the combination with a base, of means for supporting a master pattern thereon, two superposed duplicating carriages mounted on the base for movement at right angles to each other, a tracer carried by the upper duplicating carriage and adapted to be moved around the contour of the master pattern, two superposed grading carriages mounted on the upper duplicating carriages and arranged to be moved at right angles to each other, a work-holding device carried by the upper grading carriage, and operative connections between said carriages by which a movement of the tracer will produce a similar movement of the work-holding device.

12. In a machine for grading patterns, the combination with a base, of means for supporting a master pattern thereon,-two superposed duplicating carriages I mounted on the base for movement at right angles to each other, a tracer carried by the upper duplicating carriage and adapted to be moved around the contour of the master pattern, two superposed grading carriages mounted on the'upper duplicating carriages and arranged to be moved at right angles to each other, a work-holding device carried by the upper grading carriage, and operative connections between said carriages by which a movement of the tracer will produce a similar movement of thework-holding device but in an opposite direction.

13. In a machine for grading patterns, the combination With'a base, of'means for supporting a master pattern thereon, two superposed duplicating carriages mounted on the base for movement at right angles to each other, a tracer carried by the upper duplicating carriage and adapted to be moved around the contour of the master pattern, two superposed grading carriages mounted on the upper duplicating carriage and arranged to be moved at right angles to each other, a Work-holding device carried by the upper grading carriage, and adjustable operative connections between said carriages by which a movement of the tracer will produce a movement of the Worl-:'-holder other, a tracer carried by the upper duplieating carriage and adapted to be moved 10 around the contour, of the master pattern,

two superposed grading carriages mounted,

on the upper duplicating carriage and arranged to be moved at right angles to each other, a work-holding device carried by the upper grading carriage, and adjustable operative connections between said carriages by which a movement of the tracer will produce a movement of the work-holder similar to that of the tracer but ofa greater or;less amplitude and in an opposite direction.

15. A pattern-forming machine comprising a cutter head, a cutter reciprocably mounted therein and meansfor actuating, the. same, a work support,'a master pattern and means for moving the-work supportto present the work to the cutter under the control of the master pattern, and independent means for supporting the cutter head and the work support whereby transmission of the vibration ofthe cutteritothe work support is avoided.

l 16. A pattern forming machine'comprising .a cutter head, a' cuttert-reciprocably 1 mounted thereinand means for actuating the same, a supporting base for saidcutter head, means for adjusting said cutter head upon said base, a work support, a master pattern and means for moving the work support to present-the work to the cutter under the control ofthe master pattern and means for supporting the work support independent of the supporting means for the cutter head. I

4 17. A pattern forming machine comprising means for stati-onarily supporting a master pattern, a stationarily mounted outlining mechanism, a work-supporting device, and means controlled by the stationaryjmaster, pattern to movethe worksupported by the work support relative to the outlining.

mechanism therebyto cause the latter to outline on the work. a vpattern :similar in shape to the" master pattern.

'18. Apattern forming machine comprising means for 'stationarily supporting .a master pattern, a stationarily mounted outlining mechanism, a work-supporting device,

and adjustable means controlled by the stationary ,master pattern tomove the work supportedby the work-support relative to the outlining mechanism, thereby to cause the latter to outline on thework a pattern similar; in shape to and of the same size as, or of a differentsize than, the master pattern.

19. In a pattern forming machine, thecombination with a main frame, .of means for stat-ionarily supporting a master pattern thereon, a follower, means to move the follower around the edge of said master pattern, a work-support, connections between said follower and work-support by which movement ofthe follower produces a corresponding movement in work-support, and a stationary outlining mechanlsm mounted 111- for stationarily supporting a master pattern.

thereon, a follower, means to move the follower around the edge of said master pat-.

tern, a work-support, connections between said follower and work-support by which movement of the follower produces a corresponding, movement in the work-support, an

outlining mechanism, and a support there:

for which is separate from the main frame butcapable of being shifted into different positions relative thereto.

21. In a pattern forming machine, the combination with amain frame, of means for supporting a master pattern thereon,a

follower, a work-support, means to move the follower around the contour ofthe masterj pattern, means for causing such movement of the follower, to produce a like movement ofthe work-support, and an outlining niech anism stationarily supported independent of the main frame, but capable of being shifted into different positions relative thereto.

22.-In a machine for grading patterns, i

the combination with a base, of two super-- posed duplicating carriages mounted there on, superposed grading carriages "mounted on the duplicating carriages, a leverlpivoted intermediate of its ends to one grading carriage, a block to which said lever is pivoted and which is capable of movement in the di:

rection in which the last namedrcarriage is movable, a link pivotally'eonnect'ed to the other grading carriage, means for securing said link to the lever at any point oneither side of its pivotal connection with the grad mg carnage, means for supporting a masterpattern ons'aid base, atracer'connected to one of the duplicating carriages and'adapted to be moved around the contour of the mast'er pattern," a work-holding means carried by oneof the grading carriages, f

'23.In a machine for forming patterns, the combination with a slotted pattern supporting member, of bolts adjustable in said slots, a clamping nut onfeach bolt, a master pattern having apertures ofa size to permit the nuts'to pass therethrough, and washers interposed between the nuts and the master pattern and capableof removal from' the bolts in a lateral direction.

24. In a machine for forming patterns,

V the combination with a slotted pattern supporting member, of bolts adjustable in said slots, a clamping nut on each bolt, a master pattern having apertures of a size to permit the nuts to pass therethrough, and U-shape washers interposed between the nuts and the master pattern and capable of removal from the bolts in a lateral direction.

25. In a machine for grading patterns, the combination with a base, of a plurality of superposed carriages mounted on said base, some of which are movable in one direction and others of which are movable in a direction at right anglesthereto, means to support a master pattern on said base, a tracer carried by one of said carriages and adapted tobe moved around the contour of the master pattern, a work-supporting device sustained on the upper carriage, and operative connections between said carriages by which movement of the tracer will produce a similar movement of the work-sup porting device, said connections being situated beneath the carriages whereby the space above the carriages is free for the manipulation of the work.

26. In a machine for forming patterns,

the combination with means for holding the material from which the pattern is to be made, a cutting tool comprising a punch,'a guide in which said punch reciprocates, a lever connected intermediate of its ends to said punch, a fulcrum block for the lever, means to oscillate the lever and thereby reciprocate the punch, means for raising and lowering the fulcrum of'said lever thereby to raise and lower the punch, and means for producing a relative movement between the cutting tool and said material.

27. In a machine for forming patterns, the combination with a work-support for supporting material from which the pattern ELMER E. SANBORN. 

